I've had ADT in the past. We had it for about five years. The only problems I encountered were: the remote on the key chain was red, very intising to any toddler. The alarm goes off and if you can't get to the phone and dail ADT and they call you local police dept., if they have already been notified, then they are already on their way, and yes, usually not very happy when they get there and find it was only a false alarm. Another fault in the system is that is goes by phone line. so if someone does break into your house, if they know you have this type of security system, they could just cut your phone line from outside and ADT will never get the signal. Lastly, one morning I woke up and there were a few messeges on my machine from the adt and police asking if everything was OK. I guess that night I forgot to bring my phone upstaris w/me. I guess what must of happened was that when we locked all the doors that night, that garage door leading to the house was shut enough so the alarm showed all doors were shut, but with the wind, it blew open. This set off the house alarm. I work nights, and b/c of this sleep w/a box fan on at all times. no one, even my kids w/out the fans on, heard the alarm. I did call the police dept. to ask what they had done. They said they did a walk around of the house to look for any signs of forced entry, and since there were not, they left and called, since no answer they just left a messege. So after this instance, we cancelled ADT. What if someone had gotten into the house and were holding us hostage or murdering us, I always think the worst. So in that instance what good really was ADT when the police didn't come into the house to check if we were ok. I asked this to ADT and their answer was the their service was more for theft when you are not home. I am more worried about my family, than my belonings. So if anyone else who may read this knows of a better system please let me know.